EP2044789B1 - Verfahren zur nutzdatenteilübertragung auf konkurrenzkanälen - Google Patents

Verfahren zur nutzdatenteilübertragung auf konkurrenzkanälen Download PDF

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Publication number
EP2044789B1
EP2044789B1 EP07746957.5A EP07746957A EP2044789B1 EP 2044789 B1 EP2044789 B1 EP 2044789B1 EP 07746957 A EP07746957 A EP 07746957A EP 2044789 B1 EP2044789 B1 EP 2044789B1
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EP
European Patent Office
Prior art keywords
burst
random access
payload
preamble
size
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
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EP07746957.5A
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English (en)
French (fr)
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EP2044789A4 (de
EP2044789A2 (de
Inventor
Patrick Fischer
Dragan Vujcic
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LG Electronics Inc
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LG Electronics Inc
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Publication of EP2044789A4 publication Critical patent/EP2044789A4/de
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Publication of EP2044789B1 publication Critical patent/EP2044789B1/de
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access

Definitions

  • the present invention relates generally to wireless communication systems, and in particular to a new access burst structure, where the payload portion size matches the adequate resource allocation.
  • Universal mobile telecommunications system is a 3rd Generation (3G) asynchronous mobile communication system operating in wideband code division multiple access (WCDMA) based on European systems, global system for mobile communications (GSM) and general packet radio services (GPRS).
  • 3G 3rd Generation
  • WCDMA wideband code division multiple access
  • GSM global system for mobile communications
  • GPRS general packet radio services
  • LTE long term evolution
  • 3GPP 3rd generation partnership project
  • the 3GPP LTE is a technology for enabling high-speed packet communications. Many schemes have been proposed for the LTE objective including those that aim to reduce user and provider costs, improve service quality, and expand and improve coverage and system capacity.
  • the 3G LTE requires reduced cost per bit, increased service availability, flexible use of a frequency band, a simple structure, an open interface, and adequate power consumption of a terminal as an upper-level requirement.
  • FIG. 1 is a block diagram illustrating network structure of an evolved universal mobile telecommunication system (E-UMTS).
  • E-UMTS evolved universal mobile telecommunication system
  • the E-UMTS may be also referred to as an LTE system.
  • the communication network is widely deployed to provide a variety of communication services such as voice and packet data.
  • the E-UMTS network includes an evolved UMTS terrestrial radio access network (E-UTRAN), an Evolved Packet Core (EPC) and one or more user equipment.
  • the E-UTRAN may include one or more evolved NodeB (eNodeB) 20, and a plurality of user equipment (UE) 10 may be located in one cell.
  • eNodeB evolved NodeB
  • UE user equipment
  • MME mobility management entity
  • downlink refers to communication from eNodeB 20 to UE 10
  • uplink refers to communication from the UE to an eNodeB.
  • UE 10 refers to communication equipment carried by a user and may be also be referred to as a mobile station (MS), a user terminal (UT), a subscriber station (SS) or a wireless device.
  • MS mobile station
  • UT user terminal
  • SS subscriber station
  • An eNodeB 20 provides end points of a user plane and a control plane to the UE 10.
  • MME/SAE gateway 30 provides an end point of a session and mobility management function for UE 10.
  • the eNodeB and MME/SAE gateway may be connected via an S1 interface.
  • the eNodeB 20 is generally a fixed station that communicates with a UE 10, and may also be referred to as a base station (BS) or an access point.
  • BS base station
  • One eNodeB 20 may be deployed per cell.
  • An interface for transmitting user traffic or control traffic may be used between eNodeBs 20.
  • the MME provides various functions including distribution of paging messages to eNodeBs 20, security control, idle state mobility control, SAE bearer control, and ciphering and integrity protection of non-access stratum (NAS) signaling.
  • the SAE gateway host provides assorted functions including termination of U-plane packets for paging reasons, and switching of the U-plane to support UE mobility. For clarity
  • MME/SAE gateway 30 will be referred to herein simply as a "gateway,” but it is understood that this entity includes both an MME and an SAE gateway.
  • a plurality of nodes may be connected between eNodeB 20 and gateway 30 via the S1 interface.
  • the eNodeBs 20 may be connected to each other via an X2 interface and neighboring eNodeBs may have a meshed network structure that has the X2 interface.
  • FIG. 2(a) is a block diagram depicting architecture of a typical E-UTRAN and a typical EPC.
  • eNodeB 20 may perform functions of selection for gateway 30, routing toward the gateway during a Radio Resource Control (RRC) activation, scheduling and transmitting of paging messages, scheduling and transmitting of Broadcast Channel (BCCH) information, dynamic allocation of resources to UEs 10 in both uplink and downlink, configuration and provisioning of eNodeB measurements, radio bearer control, radio admission control (RAC), and connection mobility control in LTE_ACTIVE state.
  • RRC Radio Resource Control
  • BCCH Broadcast Channel
  • gateway 30 may perform functions of paging origination, LTE-IDLE state management, ciphering of the user plane, System Architecture Evolution (SAE) bearer control, and ciphering and integrity protection of Non-Access Stratum (NAS) signaling.
  • SAE System Architecture Evolution
  • NAS Non-Access Stratum
  • FIGS. 2(b) and 2(c) are block diagrams depicting the user-plane protocol and the control-plane protocol stack for the E-UMTS.
  • the protocol layers may be divided into a first layer (LI), a second layer (L2) and a third layer (L3) based upon the three lower layers of an open system interconnection (OSI) standard model that is well-known in the art of communication systems.
  • LI first layer
  • L2 second layer
  • L3 third layer
  • OSI open system interconnection
  • the physical layer provides an information transmission service to an upper layer by using a physical channel.
  • the physical layer is connected with a medium access control (MAC) layer located at a higher level through a transport channel, and data between the MAC layer and the physical layer is transferred via the transport channel.
  • MAC medium access control
  • the MAC layer of Layer 2 provides services to a radio link control (RLC) layer (which is a higher layer) via a logical channel.
  • the RLC layer of Layer 2 (L2) supports the transmission of data with reliability. It should be noted that the RLC layer illustrated in FIGS. 2(b) and 2(c) is depicted because if the RLC functions are implemented in and performed by the MAC layer, the RLC layer itself is not required.
  • the PDCP layer of Layer 2 (L2) performs a header compression function that reduces unnecessary control information such that data being transmitted by employing Internet protocol (IP) packets, such as IPv4 or IPv6, can be efficiently sent over a radio (wireless) interface that has a relatively small bandwidth.
  • IP Internet protocol
  • a radio resource control (RRC) layer located at the lowest portion of the third layer (L3) is only defined in the control plane and controls logical channels, transport channels and the physical channels in relation to the configuration, reconfiguration, and release of the radio bearers (RBs).
  • the RB signifies a service provided by the second layer (L2) for data transmission between the terminal and the UTRAN.
  • the RLC and MAC layers may perform functions such as Scheduling, Automatic Repeat Request (ARQ), and Hybrid Automatic Repeat Request (HARQ).
  • the PDCP layer may perform the user plane functions such as header compression, integrity protection, and ciphering.
  • the RLC and MAC layers (terminated in an eNodeB 20 on the network side) perform the same functions as for the control plane.
  • the RRC layer (terminated in an eNodeB 20 on the network side) may perform functions such as broadcasting, paging, RRC connection management, Radio Bearer (RB) control, mobility functions, and UE measurement reporting and controlling.
  • the NAS control protocol (terminated in the MME of gateway 30 on the network side) may perform functions such as a SAE bearer management, authentication, LTE_IDLE mobility handling, paging origination in LTE_IDLE, and security control for the signaling between the gateway and UE 10.
  • the NAS control protocol may use three different states; first, a LTE_DETACHED state if there is no RRC entity; second, a LTE_IDLE state if there is no RRC connection while storing minimal UE information; and third, an LTE_ACTIVE state if the RRC connection is established. Also, the RRC may be divided into two different states such as a RRC_IDLE and a RRC_CONNECTED.
  • the UE 10 may receive broadcasts of system information and paging information while the UE specifies a Discontinuous Reception (DRX) configured by NAS, and the UE has been allocated an identification (ID) which uniquely identifies the UE in a tracking area. Also, in RRC-IDLE state, no RRC context is stored in the eNodeB.
  • DRX Discontinuous Reception
  • ID identification
  • the UE 10 In RRC_CONNECTED state, the UE 10 has an E-UTRAN RRC connection and a context in the E-UTRAN, such that transmitting and/or receiving data to/from the network (eNodeB) becomes possible. Also, the UE 10 can report channel quality information and feedback information to the eNodeB.
  • the E-UTRAN knows the cell to which the UE 10 belongs. Therefore, the network can transmit and/or receive data to/from UE 10, the network can control mobility (handover) of the UE, and the network can perform cell measurements for a neighboring cell.
  • the UE 10 specifies the paging DRX (Discontinuous Reception) cycle. Specifically, the UE 10 monitors a paging signal at a specific paging occasion of every UE specific paging DRX cycle.
  • paging DRX Discontinuous Reception
  • the paging occasion is a time interval during which a paging signal is transmitted.
  • the UE 10 has its own paging occasion.
  • a paging message is transmitted over all cells belonging to the same tracking area. If the UE 10 moves from one tracking area to another tracking area, the UE will send a tracking area update message to the network to update its location.
  • initial access The procedure whereby the UE 10 sends a first message to the network is referred to as initial access.
  • the common uplink channel called RACH Random Access Channel
  • the initial access begins with the UE 10 sending a connection request message including a reason for the request and the network responding with an indication of radio resources allocation for the requested reason.
  • a physical random access procedure is used.
  • the physical random access transmission is under control of a higher layer protocol that performs important functions related to priority and load control.
  • This procedure differs between GSM and UMTS radio systems.
  • the present innovation is UMTS enhancement/evolution related, the W-CDMA random access procedure is described.
  • the transport channel RACH and two physical channels PRACH and AICH, are involved in the random access procedure.
  • the transport channels are the channels supplied from the physical layer to the protocol layer (MAC).
  • MAC protocol layer
  • Physical channels are identified by code and frequency in FDD mode and are normally based on a layer configuration of radio frames and timeslots.
  • the form of radio frames and timeslots depends on the symbol rate of the physical channel.
  • the radio frame is the minimum unit in the decoding process, consisting of 15 time slots.
  • a time slot is the minimum unit in the Layer 1 bit sequence. Thus the number of bits that can be accommodated in one time slot depends on the physical channel.
  • the transport channel RACH (Random Access Channel) is an uplink common channel used for transmitting control information and user data. It is applied in random access and used for low-rate data transmissions from the higher layer.
  • RACH is mapped to the uplink physical channel called PRACH (Physical Random Access Channel).
  • PRACH Physical Random Access Channel
  • AICH Application Indication Channel
  • PRACH Physical Random Access Channel
  • a random access channel is considered a contention based uplink transmission based on transmission of a random-access burst.
  • the random access burst includes a random access preamble portion and a message payload portion. Due to simultaneous access of several users, collisions may occur such that the network cannot decode the initial access message.
  • the UE 10 can start the random-access transmission (both preambles and message) at the beginning of an access slot only.
  • the random access preamble portion is used, for example, for signature detection and uplink synchronization.
  • the message payload portion includes any data or control signaling information.
  • the time axis of both the RACH and the AICH is divided into time intervals, called access slots.
  • the access slots are spaced 1.33 ms (5120 chips) apart.
  • Information regarding which access slots are available for random-access transmission and which timing offsets to use between RACH and AICH, between two successive preambles and between the last preamble and the message is signaled by the network.
  • the preamble is a short signal that is sent before the transmission of the RACH message.
  • a preamble consists of 4096 chips, which is a sequence of 256 repetitions of Hadamard codes of length 16 and scrambling codes assigned from the upper layer.
  • the Hadamard codes are referred to as signature of the preamble. There are 16 different signatures and a signature is randomly selected from available signature sets on the basis of ASC and repeated 256 times for each transmission of preamble portion.
  • the message portion is spread by OVSF codes that are uniquely defined by the preamble signature and the spreading codes as the ones used for the preamble signature.
  • the message portion radio frame of length 10 ms is divided into 15 slots, each consisting of 2560 chips.
  • Each slot consists of a data portion and a control portion that transmits control information, such as pilot bits and TFCI.
  • the data portion and the control portion are transmitted in parallel.
  • the 20-ms-long message portion consists of two consecutive message portion radio frames.
  • the AICH consists of a repeated sequence of 15 consecutive access slots, each of length 40 bit intervals or 5120chips.
  • Each access slot consists of two portions, an Acquisition Indicator (AI) portion consisting of 32 real-valued signals a0, ..., a31 and a portion of duration 1024 chips where transmission is switched off.
  • AI Acquisition Indicator
  • FIG. 3 is a block diagram illustrating a RACH burst structure when OFDM modulation is used.
  • the receiver receives the RACH burst used by OFDM modulation and performs a correlation between the received signal and the available preamble signatures. Depending on the output of the correlator, a specific algorithm determines whether or not a RACH burst has been sent.
  • the detector determines that a signature has been sent with a high probability, the timing advance value is estimated and the received signature is determined.
  • the receiver can then perform a channel estimation based on the timing advance and the signature and demodulate the data symbols.
  • a message payload portion having a fixed length is transmitted in the random access burst after the preamble portion, as illustrated in FIG. 3 .
  • the message payload portion has the same fixed length size to convey either control signaling for channel setup, location update or short data transmission.
  • the payload portion may require several retransmissions when the terminal is in a poor coverage area. Consequently, the access delay increases and the access capacity decreases due to inappropriate resource occupancy.
  • the present invention proposes a new access burst structure, where the payload portion size matches the adequate resource allocation, as illustrated in FIGS. 4-6 . Furthermore, the payload portion is no longer transmitted once the entire preamble portion has been transmitted and the payload portion may be mixed with the preamble portion in different positions within the random access burst.
  • the preamble portion is used as a reference symbol and to detect whether a payload portion has been sent once detection is complete for the demodulation of the payload portion.
  • the payload portion can have a variable length determined from the preamble portion.
  • FIG. 4 illustrates the structure of one embodiment of a RACH burst according to the invention where one symbol payload data portion and a preamble portion are sent simultaneously in one symbol.
  • FIG. 5 illustrates the structure of another embodiment of a RACH burst according to the invention where a mix of symbol payload data portions and preamble portions are sent simultaneously in multiple symbols.
  • FIG. 6 illustrates the structure of another embodiment of a RACH burst according to the invention where symbol payload data portions are separated by frequency.
  • RACH burst data is multiplexed together with the preamble during the same symbols.
  • the structure of the RACH burst is, therefore, different from the conventional structure.
  • the present invention provides a RACH burst that is used also for the channel estimation that is better distributed and, therefore, better channel estimation may be performed.
  • UE User Equipment
  • the present invention increases flexibility by facilitation burst structures that are variable.
  • the UE does not only choose from a set of signatures, but rather from a combination of signature and burst structure, as shown in FIG. 7 .
  • the network can ensure that the correct burst type is identified and the data is then correctly decoded by correlating the received data with the different available signatures and burst types.
  • a table as illustrated in FIG. 7 may be broadcast as part of system information or signaled to the UE in a different manner.
  • the UE may choose first the burst format and then an available signature according to the size of data that the UE has to transmit.
  • the burst formats illustrated in FIG. 7 are only an example. It is contemplated that the actual burst formats may be much more complex.
  • FIG. 8 illustrates a method for generating an uplink transmission burst, such as an uplink random access burst, according to one embodiment of the present invention. As illustrated in FIG. 8 , a transmission burst is defined (S110).
  • a preamble portion for the uplink transmission burst is formed (S120). At least a portion of the one or more symbols that make up the transmission burst are used and a signature defined in a predetermined signature set is used. After the preamble portion is formed, a payload portion is formed using at least a portion of the one or more symbols that make up the transmission burst (S130). The payload portion may have a variable size.
  • At least a portion of the preamble portion and at least a portion of the payload portion are formed using the same symbols.
  • One or more of the one or more symbols may be formed with both a portion of the preamble portion and a portion of the payload portion.
  • the allowed signatures from the predetermined signature set that may be used for the preamble portion and a size of the preamble portion may be based upon a size of the payload portion.
  • the preamble portion and payload portion may then be mapped onto a plurality of different subcarriers such that each of the plurality of subcarriers includes only a portion of either the preamble portion or the payload portion (S140).
  • the uplink transmission burst is then transmitted (S150).
  • the transmission burst may be generated using a plurality of burst formats that include a unique set of allowed signatures from the predetermined signature set.
  • information may be received from a network identifying one or more signatures of the predetermined signature set.
  • the information may include a burst format and may be used to form the preamble portion and the payload portion.
  • FIG. 9 illustrates a method for receiving and processing an uplink transmission burst, such as an uplink random access burst, according to one embodiment of the present invention.
  • a transmission burst is received and it is determined if the preamble portion contains a signature (S210).
  • the preamble portion is formed in at least a portion of one or more symbols that define the uplink transmission burst.
  • the signature is used to identify a burst format of a payload portion of the uplink transmission burst (S220).
  • the signature may also be used to identify the payload portion, which may have a variable size.
  • At least a portion of the preamble portion and at least a portion of the payload portion is formed using the same one of the one or more symbols.
  • One or more of the one or more symbols may be formed with both a portion of the preamble portion and a portion of the payload portion.
  • the received preamble portion and payload portion may have been mapped onto a plurality of different subcarriers, with each of the plurality of subcarriers including only a portion of either the preamble portion or the payload portion.
  • the signature is then used to estimate a radio channel through which the uplink transmission burst is transmitted (S230).
  • the estimated radio channel and the identified burst format is then used to decode the payload portion (S240).
  • the Information is then transmitted to a terminal identified by the signature (S250).
  • the information may include a burst format.
  • FIG. 10 illustrates a block diagram of mobile communication device 300, which may be configured as a UE in accordance with embodiments of the present invention.
  • the mobile communication device 300 is illustrated, for example, as a mobile phone and may be configured to perform various methods described herein.
  • the mobile communication device 300 includes a processing unit 310, RF module 335, power management module 305, antenna 340, battery 355, display 315, keypad 320, optional subscriber identify module (SIM) card 325, memory unit 330, speaker 345 and microphone 350.
  • the processing unit 310 may be a microprocessor or digital signal processor.
  • the memory unit 330 may be a flash memory, ROM or SRAM.
  • a user enters instructional information, such as a telephone number, by pushing the buttons of keypad 320 or by voice activation using microphone 350.
  • Processing unit 310 receives and processes the instructional information to perform the appropriate function, such as dialing the entered telephone number. Operational data may be retrieved from memory unit 330 to perform the function. Furthermore, processing unit 310 may display the instructional and operational information on display 315 for the user's reference and convenience.
  • Processing unit 310 issues instructional information to RF section 335, to initiate communication, such as transmitting radio signals comprising voice communication data.
  • RF section 335 includes a receiver and a transmitter to receive and transmit radio signals.
  • Antenna 340 facilitates the transmission and reception of radio signals.
  • RF module 335 may forward and convert the signals to baseband frequency for processing by processing unit 310.
  • the processed signals are transformed into audible or readable information output via speaker 345, for example.
  • Processing unit 310 is adapted to perform various methods disclosed herein, among other operations. It will be apparent to one skilled in the art that mobile communication device 300 may be readily implemented using, for example, processing unit 310 or other data or digital processing device, either alone or in combination with external support logic.
  • the present invention is described in the context of mobile communication, the present invention may also be used in any wireless communication systems using mobile devices, such as PDAs and laptop computers equipped with wireless communication capabilities. Furthermore, the use of certain terms to describe the present invention should not limit the scope of the present invention to certain type of wireless communication system, such as UMTS. The present invention is also applicable to other wireless communication systems using different air interfaces and/or physical layers, for example, TDMA, CDMA, FDMA, and WCDMA.
  • the preferred embodiments may be implemented as a method, apparatus or article of manufacture using standard programming and/or engineering techniques to produce software, firmware, hardware, or any combination thereof.
  • article of manufacture as used herein may refer to code or logic implemented as hardware, such as an integrated circuit chip, Field Programmable Gate Array (FPGA), or Application Specific Integrated Circuit (ASIC).
  • FPGA Field Programmable Gate Array
  • ASIC Application Specific Integrated Circuit
  • article of manufacture may also refer to code or logic implemented in a computer readable medium and accessed and executed by a processor, such as a magnetic storage medium (e.g., hard disk drives, or floppy disks, tape), optical storage (CD-ROMs or optical disks), volatile and non-volatile memory devices (e.g., EEPROMs, ROMs, PROMs, RAMs, DRAMs, SRAMs, firmware, or programmable logic.
  • a magnetic storage medium e.g., hard disk drives, or floppy disks, tape
  • CD-ROMs or optical disks CD-ROMs or optical disks
  • volatile and non-volatile memory devices e.g., EEPROMs, ROMs, PROMs, RAMs, DRAMs, SRAMs, firmware, or programmable logic.
  • the code in which preferred embodiments are implemented may further be accessible through a transmission media or from a file server over a network.
  • the article of manufacture in which the code is implemented may include, for example, a transmission media, such as a network transmission line, wireless transmission media, signals propagating through space, radio waves, or infrared signals.
  • a transmission media such as a network transmission line, wireless transmission media, signals propagating through space, radio waves, or infrared signals.

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  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Claims (9)

  1. Verfahren zur Erzeugung eines Random Access Bursts in einem drahtlosen Kommunikationssystem, das ein Funkzugangsnetzwerk umfasst, wobei das Verfahren, an einer mobilen Kommunikationsvorrichtung (300), umfasst:
    Empfangen von Burst-Formatinformationen bezüglich einer Mehrzahl von Formaten des Random Access Bursts von dem Funkzugangsnetzwerk, wobei jedes der Formate eine Kombination aus einer Größe eines Präambelabschnitts, einer Größe von Nutzdaten und einem Satz zulässiger Signaturen des Random Access Bursts definiert;
    Verwenden eines oder mehrerer orthogonaler Frequenzmultiplex-, Orthogonal Frequency Division Multiplexing - OFDM-, Symbole, um den Random Access Burst zu definieren;
    Ausbilden des Präambelabschnitts des Random Access Bursts unter Verwendung wenigstens eines Abschnitts einiger oder aller des einen oder der mehreren OFDM-Symbole basierend auf der Größe des Präambelabschnitts eines ausgewählten Formats, das durch die Burst-Formatinformationen angegeben wird,
    wobei der Präambelabschnitt eine Signatur zum wahlfreien Zugriff auf das Funkzugriffsnetzwerk umfasst, die aus dem Satz zulässiger Signaturen des ausgewählten Formats ausgewählt ist; und
    Ausbilden eines Nutzdatenabschnitts des Random Access Bursts unter Verwendung wenigstens eines Abschnitts einiger oder aller des einen oder der mehreren OFDM-Symbole basierend auf der Größe des Nutzdatenabschnitts des ausgewählten Formats, das durch die Burst-Formatinformationen angegeben wird,
    wobei der Nutzdatenabschnitt beliebige Daten oder Steuersignalisierungsinformationen bezüglich eines wahlfreien Zugriffs auf das Funkzugriffsnetzwerk umfasst,
    wobei wenigstens ein Abschnitt des Präambelabschnitts und wenigstens ein Abschnitt des Nutzdatenabschnitts unter Verwendung eines gleichen des einen oder der mehreren OFDM-Symbole ausgebildet werden.
  2. Verfahren nach Anspruch 1, wobei nur eines des einen oder der mehreren OFDM-Symbole sowohl mit einem Abschnitt des Präambelabschnitts als auch einem Abschnitt des Nutzdatenabschnitts ausgebildet ist.
  3. Verfahren nach Anspruch 1, wobei eine Mehrzahl des einen oder der mehreren OFDM-Symbole sowohl mit einem Abschnitt des Präambelabschnitts als auch einem Abschnitt des Nutzdatenabschnitts ausgebildet ist.
  4. Verfahren nach Anspruch 1, ferner umfassend:
    Abbilden des Präambelabschnitts und des Nutzdatenabschnitts auf eine Mehrzahl unterschiedlicher Unterträger, wobei jeder der Unterträger nur wenigstens einen Abschnitt entweder des Präambelabschnitts oder des Nutzdatenabschnitts umfasst.
  5. Verfahren nach Anspruch 1, wobei die Größe des Nutzdatenabschnitts variabel ist.
  6. Verfahren nach Anspruch 1, ferner umfassend:
    Bestimmen zulässiger Signaturen des vorgegebenen Satzes von Signaturen und einer Größe des Präambelabschnitts basierend auf einer Größe des Nutzdatenabschnitts.
  7. Verfahren nach Anspruch 1, wobei die Burst-Formatinformationen über durch das Funkzugriffsnetzwerk gesendete Systeminformationen empfangen werden.
  8. Verfahren nach Anspruch 1, ferner umfassend: Übertragen des Random Access Bursts.
  9. Mobile Kommunikationsvorrichtung (300), umfassend: eine Verarbeitungseinheit (310), ein Funkfrequenz-, radio frequency - RF-, Modul (335) und eine Speichereinheit (330), wobei die Verarbeitungseinheit (310) zum Ausgeben von Anweisungsinformationen an das RF-Modul (335) und dazu, ein Verfahren zur Erzeugung eines Random Access Bursts nach einem der Ansprüche 1 bis 8 durchzuführen, ausgestaltet ist.
EP07746957.5A 2006-06-16 2007-06-15 Verfahren zur nutzdatenteilübertragung auf konkurrenzkanälen Not-in-force EP2044789B1 (de)

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TWI398144B (zh) 2013-06-01
US9462578B2 (en) 2016-10-04
WO2007145488A3 (en) 2009-07-30
EP2044789A4 (de) 2014-03-19
US8547949B2 (en) 2013-10-01
US20100067452A1 (en) 2010-03-18
TW200812315A (en) 2008-03-01
US20130336266A1 (en) 2013-12-19
EP2044789A2 (de) 2009-04-08
WO2007145488A2 (en) 2007-12-21

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